Ubuntu 16.04 LTS / 18.04 LTS / 19.04 : ghostscript vulnerabilities (USN-4111-1)

High Nessus Plugin ID 128322

Synopsis

The remote Ubuntu host is missing one or more security-related patches.

Description

Hiroki Matsukuma discovered that the PDF interpreter in Ghostscript did not properly restrict privileged calls when '-dSAFER' restrictions were in effect. If a user or automated system were tricked into processing a specially crafted file, a remote attacker could possibly use this issue to access arbitrary files.
(CVE-2019-14811, CVE-2019-14812, CVE-2019-14813, CVE-2019-14817).

Note that Tenable Network Security has extracted the preceding description block directly from the Ubuntu security advisory. Tenable has attempted to automatically clean and format it as much as possible without introducing additional issues.

Solution

Update the affected ghostscript and / or libgs9 packages.

See Also

https://usn.ubuntu.com/4111-1/

Plugin Details

Severity: High

ID: 128322

File Name: ubuntu_USN-4111-1.nasl

Version: 1.6

Type: local

Agent: unix

Published: 2019/08/29

Updated: 2019/12/31

Dependencies: 12634

Risk Information

Risk Factor: High

CVSS v2.0

Base Score: 7.5

Temporal Score: 5.5

Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:P/A:P

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:canonical:ubuntu_linux:ghostscript, p-cpe:/a:canonical:ubuntu_linux:libgs9, cpe:/o:canonical:ubuntu_linux:16.04, cpe:/o:canonical:ubuntu_linux:18.04:-:lts, cpe:/o:canonical:ubuntu_linux:19.04

Required KB Items: Host/cpu, Host/Ubuntu, Host/Ubuntu/release, Host/Debian/dpkg-l

Exploit Ease: No known exploits are available

Patch Publication Date: 2019/08/29

Vulnerability Publication Date: 2019/09/03

Reference Information

CVE: CVE-2019-14811, CVE-2019-14812, CVE-2019-14813, CVE-2019-14817

USN: 4111-1

IAVB: 2019-B-0081